When SkylineRunner is called with no arguments, it just returns with no message making it unclear on whether it is working properly.
 
I suggest either returning some version information or, more standard, print some help information about using SkylineRunner. This could be by listing SkylineRunner’s options, or specifying to “use ‘–help’ to see program argument options”.
 
Independent of the no argument issue, I also recommend you add a "—version” and “—help” option.